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Groups > linux.kernel > #1491922

using SDT events

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject using SDT events
Date 2016-09-27 16:00 +0200
Message-ID <sm15o-1KC-25@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Masami,

	Testing something else (event aliases/JSON) I saw the many sdt
events available via 'perf list', decided to use the usual workflow,
failed, what am I doing wrong?


[root@jouet ~]# perf list sdt_qemu:pci*

List of pre-defined events (to be used in -e):

  sdt_qemu:pci_cfg_read                              [SDT event]
  sdt_qemu:pci_cfg_write                             [SDT event]
  sdt_qemu:pci_update_mappings_add                   [SDT event]
  sdt_qemu:pci_update_mappings_del                   [SDT event]
[root@jouet ~]# perf record -e sdt_qemu:pci* -a
event syntax error: 'sdt_qemu:pci*'
                     \___ unknown tracepoint

Error:	File /sys/kernel/debug/tracing/events/sdt_qemu/pci* not found.
Hint:	Perhaps this kernel misses some CONFIG_ setting to enable this
feature?.

Run 'perf list' for a list of valid events

 Usage: perf record [<options>] [<command>]
    or: perf record [<options>] -- <command> [<options>]

    -e, --event <event>   event selector. use 'perf list' to list
available events
[root@jouet ~]# 

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Thread

using SDT events Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-09-27 16:00 +0200
  Re: using SDT events Masami Hiramatsu <mhiramat@kernel.org> - 2016-09-27 20:50 +0200
    Re: using SDT events Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-09-28 15:40 +0200

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